Molecular sound-resonator



(lodeL) G. F. SHAVER.

' MOLECULAR SOUND RESONATOR.

No. 444,464. Patented Jan. 13,1891.

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UNITED STATES PATENT OFFICE.

GEORGE FREDERICK SHAVER, OF NEW YORK, N. Y., ASSIGNOR TO THE SHAVERCORPORATION, OF NEW JERSEY.

MOLECULAR SOUND-RESONATOR.-

SPECIFICATION forming part of Letters Patent No. 444,464, dated January13, 1891.

Serial No. 351,464. (Modeld T0 (LZZ whom it may concern.-

Be it known that I, GEORGE FREDERICK SHAVER, a citizen of the UnitedStates, and a resident of New York city, in the county of New York andState of New York, have invented certain new and useful Improvements inMolecular Sound-Resonators, of which the following is a specification.

The object of my invention is to provide a molecular resonator to beapplied to mechanical telephones, stethoscopes, &c, whereby minutevibrations may be so increased as to render sounds ordinarily inaudibleto become audible and ordinarily audible sounds to be largely augmented,The means whereby this end is attained is shown in the accompanyingdrawings, of which Figure 1 shows the device applied to a mechanicaltelcphone, and Fig. 2 shows a device as embodied in a stethoscope.

A represents a metallic resonator, preferably spun or pressed intoconcavoconvex form, and is provided with a centrally-located apertureand rear extension-tube B. A c011- necting-wire 0 passes through thesaid tube to the resonator A, and the whole is soldered or brazedtogether, forming a continuous jointless metallic connection from oneresonator to another.

The operation. of the device is as follows: \Vhen vibrations of any sortimpinge upon either resonator, it is caused to vibrate, and thevibrations are transferred to the rear extension B, thence to theconnecting-wire O, thence to the opposing extension B, and to theopposing resonator A, and as no joint occurs in the path of thevibration the quality and power of the vibration remain practicallyunimpaired, and when the connecting'wire is short the vibrations appearto be augmented, so that the slightest touch upon one resonator becomesan audible sound when reproduced by the other. I account for thisremarkable phenomenon upon the theory that the result is due to amovement or disturbance of the molecules of matter composing theresonator, extension, and connecting-wire, and that as the receixing'resonator delivers the vibrations to the connecting-wire unimpairedthe vibrations upon reaching the apex of the receiving-resonator spreadout over the entire surface of the same, and thereby pro duce the eitectof an amplification of the sound transmit-ted.

In a former patent of mine, No. $92,233, issued November 6, 1888, adevice therein called a reflector is shown, which in outward appearancebears close resemblance to the molecular resonator herein described, theessential diiterence being in the provision of a jointless metallicconnection between one resonator or diaphragm and another. ThereforeWhat I claim as new, and desire to secure by Letters Patent, is

1. A molecular resonator consisting of a disk of metal A, in combinationwith a rear extension-piece B and a eonnecting wire O, all solidlysoldered or brazed together into one continuous metallic conductor,substantially as herein set forth and described.

2. The combination of two metallic resonators connected one with theother by means of a jointless metallic conductor, substantially asherein set forth and described.

Signed at New York, in the county of New York and State of New York,this 10th day of May, A. D. 1890.

GEORGE FREDERICK SHAVER.

Witnesses:

H. J. FoorNEE, M. CARSON.

